Finding the Fourth Proportional to 1,820,905.79, 2,512,850.11 and 1,005,109.70
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Solution
The fourth proportional to 1,820,905.79, 2,512,850.11 and 1,005,109.70 is: 1,387,051.45
Step by Step Solution
- Step 1: Write the proportion equation
1,820,905.79 : 2,512,850.11 = 1,005,109.70 : x - Step 2: Convert to fraction form
1,820,905.79/2,512,850.11 = 1,005,109.70/x - Step 3: Cross multiply
1,820,905.79x = 2,512,850.11 × 1,005,109.70 - Step 4: Simplify right side
1,820,905.79x = 2,525,690,005,130.04 - Step 5: Solve for x
x = 2,525,690,005,130.04/1,820,905.79 - Step 6: Final answer
x = 1,387,051.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.